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x in (-oo:+oo)
-((1/2)*x)-4/5 = -113/110 // + -113/110
-((1/2)*x)-4/5-(-113/110) = 0
(-1/2)*x-4/5+113/110 = 0
5/22-1/2*x = 0 // - 5/22
-1/2*x = -5/22 // : -1/2
x = -5/22/(-1/2)
x = 5/11
x = 5/11
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